US Bridges

Main Street over Aspatuck River

Fair

Suffolk County, New York · At Westhampton Beach · Structure no. 000000003300710

Built
1967
58 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
304 ft
5 main spans
Daily traffic
2,266
2020 count
Owner
County
County Highway Agency

About this bridge

Main Street over Aspatuck River is a steel stringer/multi-beam or girder carrying Main Street over Aspatuck River in Suffolk County, New York. It was built in 1967, so it is 58 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,266 vehicles a day, roughly 4% of them trucks, projected to reach 2,803 by 2041. The structure is 304 ft (92.7 m) long and 36 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMain Street
CrossesAspatuck River
LocationAt Westhampton Beach
Coordinates40.81219, -72.63461
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92 US tons
Inventory rating55 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length304 ft (92.7 m)
Longest span60 ft (18.2 m)
Deck width36 ft (11 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,266 (2020)
Projected traffic2,803 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$7.9 million (2024 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Main Street over Aspatuck River built?

It was built in 1967, making it 58 years old in 2025.

What condition is Main Street over Aspatuck River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does Main Street over Aspatuck River carry?

About 2,266 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Main Street over Aspatuck River?

The structure is 304 ft (92.7 m) long with a longest span of 60 ft (18.2 m) and a deck 36 ft wide.

Who owns Main Street over Aspatuck River?

It is owned by the County Highway Agency.